Shade-holder for porcelain work.



APPLICATION FILED JULY 22.19l8.

Patented Man 18, 1919,

' ATTORNEY 1m? uonms rzrms co. Puma shades to porcelain sockets.

rrnn s'ra'rns PA ENT orrion.

GEORGE P. KNAPP, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR TO HARVEY HUBBELL, INCORPORATED, OF BRIDGEPORT, CONNECTICUT, .A CORPORATION OF CONNECTICUT.

Specification of Letters Patent.

Patented Mar. 18, 1919.

Application filed. July 22, 1918. Serial No. 246,076.

Connecticut, have invented an Improvement in Shade-Holders for Porcelain W'ork, of which thefollowing is a specification.

This invention has for its object to provide a shade holder adapted for use in securing all kinds of shades to electric lamp sockets and especially adapted for use in securing porcelain and porcelain enamel Heret-ofore, so far as I am aware, the construction of holders for porcelain and porcelain enamel shades has been such that it was necessary to assemble the shades and holders and permanently secure them together at the factory, as the assembling could not well be left to the user. The riveting of holders upon the shades has proved a. diflicult and expensive process as the riveting is very likely to break porcelain shades and to crack the enamel of porcelain enamel shades, and where the holders have been made in separate parts and secured together and to the shades by screws, the method has proved both expensive and unsatisfactory, and no matter how the shades and the holders were secured together, the amount of space required for packing the assembled shades and holders is twice as much as is required where my present invention is used.

My present invention entirely overcomes the objections stated and enables me to provide a simple and inexpensive shade holder which can be readily attached by the user, as it merely requires to be passed up through the shade where it is locked by spring tongues, which while it holds the shade with perfect security will permit detachment of the shade without manipulating screws, and which, most important of all, will permit the shades to be nested in packing'and the holders to be packed in the lower shade, and if necessary outside the upper shade, when nested. The result is that double the number of shades and holders heretofore possible can be packed in a carton of given size, for example, a dozen shades and their holders can be easily packed in a. carton that would accommodate but half a dozen assembled shades and holders.

In the accompanying drawing forming a part of this specification,

Figure l is a view partly in elevation and partly in section, showing the use of my novel shade holder in attaching a shade to a porcelain socket v Fig. 2 a plan view of the holder detached;

Fig. 3 a perspective view on an enlarged scale of the holder detached, and

Fig. 4 isa section on the line 4i in Fig. 2.

For convenience in manufacturing I preferably blank out the entire shade holder in one piece from sheet metal, although this method of construction is not essential.

My novel holder comprises an attaching collar, shown as made in two parts, indicated by 10, a spring shade holding ring 11 which is provided with an outwardly turned supporting flange 12, relatively wide arms 13 which connect the attaching collar and the holding ring, and spring shade locking tongues let blanked out from the metal of the arms. The ends of the parts of the attaching collar are provided with outwardly turned ears 15, each corresponding pair of ears being engaged by a set screw 16, which of course passes freely through one ear and has threaded engagement with the other. In

' order to retain the ends of the holding ring in alinement in use, one end of the ring is provided with an offset tongue 17 and the other end with a. keeper 18 in which the tongue slides freely.

As already stated the arms which connect the attaching collar and the holding ring are made relatively wide- This is in order to provide ample strength and also to provide suflicient metal for the locking tongues. These tongues extend from near the upper ends of the arms, are attached at the upper ends only, and have free movement in the openings in the arms. The lower ends of the tongues are provided with central outwardly projecting engaging portions 19. The radius of curvature of the engaging portions is considerably less than the radius of curvature of the spring ring and the lower end of each engaging portion is a concave curve, so that while the engaging portions themselves will spring outward over the inner edge of a shade flange, as in Fig. 1, the edges of the lower ends of the tongues will provide stops 20 which extend below the edge of the shade flange, in the assembled position, and limit the outward movement of the tongues, the engaging portions only of the tongues springing outward over the shade flange.

instance a porcelain socket, and 22 a shade having the usual inwardly turned flange 23 surrounding the central opening. 1

The assembling of a shade and holder takes much less time than it does to describe it. The holder is simply pushed upward from below through the opening in the shade. As the locking tongues are pushed through the, opening they engage the edge of the shade flange which presses them inward until the engaging portions of the tongues have passed the edge of the shade flange when said engaging portions will spring outward over the shade flange, as in Fig. l, and thus lock the holder and shade securely together. As the line of the lower ends of the locking tongues is a concave curve, it follows that the engaging portions of the locking tongues will. adapt themselves to variations in the size of the shade openings, and the resiliency of the Having thus described my invention 1 claim:

1. A shade holder of the character described comprising a spring shade holding ring havin an outwardly turned supporting flange, an attaching collar, arms connecl'lng said rlng and'oollar, and shade look-- ing tongues cut out from the metal of the arms and adapted to spring outward over a shade flange when. the shade flange is engaged by the supporting flange.

2. A shade holder of the character descriped comprising a spring shade holding ring having an outwardly turned support ing flange, an attaching-collar, arms connecting said ring and collar, and shade locking tongues having outwardly projecting engaging portions adapted to spring over a shade flange when the shade flange is engaged by the supporting flange, and

Copies of this patent may be obtained for stops which extend below the edge er the shade flange and limit the outward movement of thetongues. 7 3. A shade holder of the character described comprising a spring shade holding ring having an outwardly turned supporting flange, an attaching collar, arms connecting said ring and collar, and shade locking.tonguesadapted to spring outward over a shade flange when the shade flange is engaged by the supporting flange.

4:. A shade holder of the character described comprising a spring shade holding ring having an outwardly turned support ing flange, an attaching collar, arms connecting said ring and collar, and shade locking tongues having central outwardly projecting engaging portions adapted to spring overa shade flange when the shade flange is engaged by the supporting flange, the lower ends of said tongues being concave curves, and'the edges of the lower ends of the tongues providing stops which extend below the edge of the shade flange, limit the outward movement of the tongues, and

thus prevent rattling;

5. A shade holder of the character described comprising a spring shade holding ring having an outwardly turned supporting flange, one end of said ring being provided with an offset tongue and the other with a keeper in which the tongue slides freely, an attaching collar, arms connecting said ring and collar, and shade locking tongues adapted to spring outward over a shade flange.

6. The combination of a shade flange, a spring holding ring having an outwardly turned flange by which the shade flange is supported, an attaching collar, arms connecting sald ring and collar, and shade locking tongues adapted to spring outward over the shade flange.

7. The combination of a shade flange, a

spring holding ring having anoutwardly turned flange by which the shade flange is supported, an attaching collar, arms connecting said ring and collar, and shade lock ing tongues cut out from the metal of the arms and having outwardly projecting-engaging portions adapted to spring'over the shade flange and stops which limit the'outward movement of the tongues.

In testimony whereof I aflix my signature.

' GEORGE r. KNAPP.

five cents each, by addressing the fcoinmissioner of Patents, Washington, D. O. 

